<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>

  <body>
    <div id="app"></div>

    <script type="x-template" id="fh">
      <div>
        <h2>{{message}}</h2>
        <h2>{{counter}}</h2>
        <button @click='increment'>+1</button>
        <button @click='decrement'>-1</button>
      </div>
    </script>
    <script src="../js/Vue.js"></script>
    <script>
      Vue.createApp({
        template: '#fh',
        data() {
          return {
            message: 'Hello World',
            counter: 100
          }
        },
        // methods方法，可以在里面定义方法
        methods: {
          increment() {
            this.counter++
          },
          decrement() {
            this.counter--
          }
        }
      }).mount('#app')
    </script>
  </body>
</html>
